Project/ Successful Case

Curtain-type Protection System at K2158-K2159 Guangdong Qingliang Express


Tmie:2018/7/24 9:27:09     Click Num:407


1  Descriptoin

Qinglian Highway, located in Qingyuan city, Guangdong province, is 213.75 kilometers long in total.

Various geological disasters (collapse, slide, falling rocks) were caused along the highway due to previous excavation, engineering explosion and weathering etc. Thus slope reinforcement for certain sections was required urgently. 

图片1.png

Figure 1 An overall view for K2158+020-K2159+300


2  Geological survey

The maximum height between the target spots and highway is approx. 400m, and the protection width is more than 1000m.

The target slopes are rather steep and the lithology of slope is mainly limestone. Above the target slope, large quantity of dangerous rocks were exposed which brought potential harm for the highway.

The slope protection projected instructed by OST finished on Feb.8th, 2018.


图片3.png

Figure 2 Slope rockfalls

图片2.png

Figure 3 Rock cavity

3  Solutions

For section K2158+010~K2158+190, LZ-150 was adopted. Steel column height is 5m. 

For section K2158+340~K2158+760, LZ-150 was adopted. Steel column height is 5m. 

For section K2158+760~K2159+180, LZ-150 was adopted. Steel column is 5m.

For section K2159+230~K2159+300, LF-150 was adopted. 


4  Construction

80000㎡ curtain-type net finished installing within 50 days.


5  Protection effect                                                            

The project finished in early Feb. 2018. This protection system is environment-friendly and did not destroyed the plants on the slope. It successfully guided/intercepted rockfalls along the target section. The accumulated rockfall at the bottom of the system were easily cleared. 


IMG_5651.jpg

After installation 

IMG_5650.jpg

After installation

图片4_副本.png

Intercepted rockfalls successfully 

图片6_副本.png


Plants recovering